Elessar: First Movie: The Hobbit: An Unexpected Journey Second Movie: The Hobbit: The Desolation Of Smaug Third Movie: The Hobbit: There and Back Again

I like this set best. It retains the original two titles as the first and last movies, just as before. The Desolation Of Smaug is great as the filler because that's where the fate of Smaug should be told. 'Desolation' is a good, strong, dramatic word. And Smaug is the primary endpoint of the company (until it results in the battle) and so his name belongs in the title. Finally it's a chapter title, and a good, descriptive one to end movie number 2.